Simple Sequence Diagram MermaidJS Example

graph TD
  a-->b

graph LR

id(Label)

id((Start))

id[(Database)]

id{is successful}

id(((End)))

flowchart LR
  A-->B

flowchart LR
  A --- B

flowchart LR
  A---|This is the text|B

sequenceDiagram
  a->b: solid no arrow
  a-->b: dashed no arrow
  a-->>b: dashed with arrow
  b-->>a: reverse

classDiagram
class Person{
    String name
}